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Effect of distillers dried grains with solubles diet supplemented with rumen‐protected lysine and methionine on milk production and milk amino acids in the lactating cow
Author(s) -
Li Wenbo,
Chang Qifa,
Liu Gang,
Shan Anshan,
Li Feng
Publication year - 2014
Publication title -
international journal of dairy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.061
H-Index - 53
eISSN - 1471-0307
pISSN - 1364-727X
DOI - 10.1111/1471-0307.12085
Subject(s) - food science , rumen , methionine , distillers grains , dry matter , chemistry , lysine , soybean meal , milk production , milk protein , lactation , amino acid , zoology , biology , fermentation , biochemistry , pregnancy , raw material , genetics , organic chemistry
This study was to quantify the milk protein and amino acids ( AA ) in response to rumen‐protected lysine ( L ys) and methionine ( M et) supplementation in dairy cows fed distillers dried grains with solubles ( DDGS ) diet. Forty cows were divided into five dietary treatments: soybean meal diet ( SM ), DDGS diet and DDGS diets with 40 g/day L ys ( DL ), 20 g/ day M et dry matter ( DM ) and 20 g/ day M et plus 40 g/ day L ys ( DLM ), separately. Compared with SM , DL and DM groups, DLM group increased milk yield, 4% fat‐corrected milk, energy‐corrected milk yield and protein in milk. DDGS treatments increased total AA and the essential AA in milk. Results indicated that dietary DDGS increased intestinal supplies of Lys and Met.